diff --git a/.gitignore b/.gitignore
index 98a1400..8f75eff 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,6 @@
 .vscode
 *.txt
 *.csv
-__pycache__
\ No newline at end of file
+__pycache__
+build/
+dist/
\ No newline at end of file
diff --git a/scrape.py b/scrape.py
index 0474422..a11352e 100644
--- a/scrape.py
+++ b/scrape.py
@@ -58,7 +58,7 @@ def scrape_id(id):
 if __name__ == "__main__":
     if len(sys.argv) < 2:
         print("Usage: scrape.py <id>")
-        exit(0)
+        sys.exit(0)
 
     result = scrape_id(sys.argv[1])
 
diff --git a/update_list.py b/update_list.py
index 7e81185..0abada5 100644
--- a/update_list.py
+++ b/update_list.py
@@ -3,12 +3,12 @@ import csv, sys, datetime
 
 if len(sys.argv) < 3:
     print("Usage: update_list.py <list.txt> <update_file.csv>")
-    exit(0)
+    sys.exit(0)
 
 list_filename = sys.argv[1]
 update_filename = sys.argv[2]
 
-update_file = open(update_filename, "w+")
+update_file = open(update_filename, "a+")
 update_file_writer = csv.writer(update_file)
 
 current_time_string = "{0:%Y-%m-%d %H:%M:%S}".format(datetime.datetime.now())
diff --git a/update_list.spec b/update_list.spec
new file mode 100644
index 0000000..3bf5437
--- /dev/null
+++ b/update_list.spec
@@ -0,0 +1,33 @@
+# -*- mode: python ; coding: utf-8 -*-
+
+block_cipher = None
+
+
+a = Analysis(['update_list.py'],
+             pathex=['C:\\Users\\Jan\\Development\\python3\\mintos-scraper'],
+             binaries=[],
+             datas=[],
+             hiddenimports=[],
+             hookspath=[],
+             runtime_hooks=[],
+             excludes=[],
+             win_no_prefer_redirects=False,
+             win_private_assemblies=False,
+             cipher=block_cipher,
+             noarchive=False)
+pyz = PYZ(a.pure, a.zipped_data,
+             cipher=block_cipher)
+exe = EXE(pyz,
+          a.scripts,
+          a.binaries,
+          a.zipfiles,
+          a.datas,
+          [],
+          name='update_list',
+          debug=False,
+          bootloader_ignore_signals=False,
+          strip=False,
+          upx=True,
+          upx_exclude=[],
+          runtime_tmpdir=None,
+          console=True )